PLC or Relay control with optional operation of manual and semi-auto.

有电脑、继电器两种控制方式，设有手动、半自动两种操作方式。

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For correct installation use a multiple pole switch or relay as shown below.

多台执行器连接的正确方式是使用多级转换开关和继电器。

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Not matter what, get back into the water prior to your personal race or relay to get your mind and body right again.

无论怎样，在你的个人赛或者接力赛开始之前跳到水里，这样你会从精神到身体上都会进入一个比赛的状态。

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Such machines could be used for scientific research or surveillance, or as relay stations to transmit communication signals across long distances.

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Participants have the option of tackling the 50 miles individually, in teams, or in a relay of four runners.

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"It's even hard now to raise money in town for band trips, or for the Relay for Life, " Paula Smith said.

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